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<a name="1" href="#1">1</a>   <em class="jxr_javadoccomment">/**</em>
<a name="2" href="#2">2</a>   <em class="jxr_javadoccomment"> * </em>
<a name="3" href="#3">3</a>   <em class="jxr_javadoccomment"> * Copyright 2009 Marco Speranza &lt;marco.speranza79@gmail.com&gt;</em>
<a name="4" href="#4">4</a>   <em class="jxr_javadoccomment"> *    </em>
<a name="5" href="#5">5</a>   <em class="jxr_javadoccomment"> * Licensed under the Apache License, Version 2.0 (the "License");</em>
<a name="6" href="#6">6</a>   <em class="jxr_javadoccomment"> * you may not use this file except in compliance with the License.</em>
<a name="7" href="#7">7</a>   <em class="jxr_javadoccomment"> * You may obtain a copy of the License at</em>
<a name="8" href="#8">8</a>   <em class="jxr_javadoccomment"> *   </em>
<a name="9" href="#9">9</a>   <em class="jxr_javadoccomment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a name="10" href="#10">10</a>  <em class="jxr_javadoccomment"> *  </em>
<a name="11" href="#11">11</a>  <em class="jxr_javadoccomment"> * Unless required by applicable law or agreed to in writing, software</em>
<a name="12" href="#12">12</a>  <em class="jxr_javadoccomment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a name="13" href="#13">13</a>  <em class="jxr_javadoccomment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a name="14" href="#14">14</a>  <em class="jxr_javadoccomment"> * See the License for the specific language governing permissions and</em>
<a name="15" href="#15">15</a>  <em class="jxr_javadoccomment"> * limitations under the License.</em>
<a name="16" href="#16">16</a>  <em class="jxr_javadoccomment"> */</em>
<a name="17" href="#17">17</a>  
<a name="18" href="#18">18</a>  <strong class="jxr_keyword">package</strong> org.commons.util.conversion;
<a name="19" href="#19">19</a>  
<a name="20" href="#20">20</a>  <em class="jxr_javadoccomment">/**</em>
<a name="21" href="#21">21</a>  <em class="jxr_javadoccomment"> * Procedura di utilita' per convertire valori esadecimali in decimali, e</em>
<a name="22" href="#22">22</a>  <em class="jxr_javadoccomment"> * viceversa.</em>
<a name="23" href="#23">23</a>  <em class="jxr_javadoccomment"> * </em>
<a name="24" href="#24">24</a>  <em class="jxr_javadoccomment"> * @author Marco Speranza</em>
<a name="25" href="#25">25</a>  <em class="jxr_javadoccomment"> */</em>
<a name="26" href="#26">26</a>  
<a name="27" href="#27">27</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/commons/util/conversion/HexConv.html">HexConv</a> {
<a name="28" href="#28">28</a>      <em class="jxr_javadoccomment">/**</em>
<a name="29" href="#29">29</a>  <em class="jxr_javadoccomment">     * Converte in un intero il numero esadecimale contenuto nel byte in input.</em>
<a name="30" href="#30">30</a>  <em class="jxr_javadoccomment">     * </em>
<a name="31" href="#31">31</a>  <em class="jxr_javadoccomment">     * @param b</em>
<a name="32" href="#32">32</a>  <em class="jxr_javadoccomment">     *            il byte da convertire</em>
<a name="33" href="#33">33</a>  <em class="jxr_javadoccomment">     * @return il valore decimale calcolato</em>
<a name="34" href="#34">34</a>  <em class="jxr_javadoccomment">     */</em>
<a name="35" href="#35">35</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">int</strong> hexInt(byte b) {
<a name="36" href="#36">36</a>  	<strong class="jxr_keyword">int</strong> value = (<strong class="jxr_keyword">int</strong>) b;
<a name="37" href="#37">37</a>  	<strong class="jxr_keyword">return</strong> (value &lt; 0) ? value + 256 : value;
<a name="38" href="#38">38</a>      } <em class="jxr_comment">// end hexInt()</em>
<a name="39" href="#39">39</a>  
<a name="40" href="#40">40</a>      <em class="jxr_javadoccomment">/**</em>
<a name="41" href="#41">41</a>  <em class="jxr_javadoccomment">     * Converte in un decimale il numero esadecimale contenuto nel buffer in</em>
<a name="42" href="#42">42</a>  <em class="jxr_javadoccomment">     * input (su 2 byte), assumendo il Big Endian order: MSB, LSB.</em>
<a name="43" href="#43">43</a>  <em class="jxr_javadoccomment">     * </em>
<a name="44" href="#44">44</a>  <em class="jxr_javadoccomment">     * @param buffer</em>
<a name="45" href="#45">45</a>  <em class="jxr_javadoccomment">     *            il buffer contenente la word (MSB, LSB)</em>
<a name="46" href="#46">46</a>  <em class="jxr_javadoccomment">     * @param offset</em>
<a name="47" href="#47">47</a>  <em class="jxr_javadoccomment">     *            la posizione in cui inizia la word</em>
<a name="48" href="#48">48</a>  <em class="jxr_javadoccomment">     * @return il valore decimale corrispondente</em>
<a name="49" href="#49">49</a>  <em class="jxr_javadoccomment">     */</em>
<a name="50" href="#50">50</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">int</strong> hexInt(byte[] buffer, <strong class="jxr_keyword">int</strong> offset) {
<a name="51" href="#51">51</a>  	<strong class="jxr_keyword">return</strong> HexConv.hexInt(buffer[offset], buffer[offset + 1]);
<a name="52" href="#52">52</a>      } <em class="jxr_comment">// end hexInt()</em>
<a name="53" href="#53">53</a>  
<a name="54" href="#54">54</a>      <em class="jxr_javadoccomment">/**</em>
<a name="55" href="#55">55</a>  <em class="jxr_javadoccomment">     * Converte in un decimale il numero esadecimale in input.</em>
<a name="56" href="#56">56</a>  <em class="jxr_javadoccomment">     * </em>
<a name="57" href="#57">57</a>  <em class="jxr_javadoccomment">     * @param msb</em>
<a name="58" href="#58">58</a>  <em class="jxr_javadoccomment">     *            il byte pi� significativo</em>
<a name="59" href="#59">59</a>  <em class="jxr_javadoccomment">     * @param lsb</em>
<a name="60" href="#60">60</a>  <em class="jxr_javadoccomment">     *            il byte meno significativo</em>
<a name="61" href="#61">61</a>  <em class="jxr_javadoccomment">     * @return il valore decimale corrispondente</em>
<a name="62" href="#62">62</a>  <em class="jxr_javadoccomment">     */</em>
<a name="63" href="#63">63</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">int</strong> hexInt(byte msb, byte lsb) {
<a name="64" href="#64">64</a>  	<strong class="jxr_keyword">int</strong> iMsb = HexConv.hexInt(msb);
<a name="65" href="#65">65</a>  	<strong class="jxr_keyword">int</strong> iLsb = HexConv.hexInt(lsb);
<a name="66" href="#66">66</a>  	<strong class="jxr_keyword">return</strong> (iMsb * 256 + iLsb);
<a name="67" href="#67">67</a>      } <em class="jxr_comment">// end hexInt()</em>
<a name="68" href="#68">68</a>  
<a name="69" href="#69">69</a>      <em class="jxr_javadoccomment">/**</em>
<a name="70" href="#70">70</a>  <em class="jxr_javadoccomment">     * Converte in un float il numero esadecimale contenuto nel buffer in input</em>
<a name="71" href="#71">71</a>  <em class="jxr_javadoccomment">     * (su 4 byte). Assume il seguente ordine: LsbL, Lsb, Msb, MsbM</em>
<a name="72" href="#72">72</a>  <em class="jxr_javadoccomment">     * </em>
<a name="73" href="#73">73</a>  <em class="jxr_javadoccomment">     * @param buffer</em>
<a name="74" href="#74">74</a>  <em class="jxr_javadoccomment">     *            il buffer contenente la word (LL, L, M, MM)</em>
<a name="75" href="#75">75</a>  <em class="jxr_javadoccomment">     * @param offset</em>
<a name="76" href="#76">76</a>  <em class="jxr_javadoccomment">     *            la posizione da cui inizia la word</em>
<a name="77" href="#77">77</a>  <em class="jxr_javadoccomment">     * @return il valore float calcolato.</em>
<a name="78" href="#78">78</a>  <em class="jxr_javadoccomment">     */</em>
<a name="79" href="#79">79</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">float</strong> bufferToFloat(byte[] buffer, <strong class="jxr_keyword">int</strong> offset) {
<a name="80" href="#80">80</a>  	<strong class="jxr_keyword">int</strong> v0 = HexConv.hexInt(buffer[offset]);
<a name="81" href="#81">81</a>  	<strong class="jxr_keyword">int</strong> v1 = HexConv.hexInt(buffer[offset + 1]);
<a name="82" href="#82">82</a>  	<strong class="jxr_keyword">int</strong> v2 = HexConv.hexInt(buffer[offset + 2]);
<a name="83" href="#83">83</a>  	<strong class="jxr_keyword">int</strong> v3 = HexConv.hexInt(buffer[offset + 3]);
<a name="84" href="#84">84</a>  
<a name="85" href="#85">85</a>  	<em class="jxr_comment">// 16777216 = 65536 * 256</em>
<a name="86" href="#86">86</a>  	<strong class="jxr_keyword">int</strong> value = v3 * 16777216;
<a name="87" href="#87">87</a>  	value += (v2 * 65536);
<a name="88" href="#88">88</a>  	value += (v1 * 256);
<a name="89" href="#89">89</a>  	value += v0;
<a name="90" href="#90">90</a>  
<a name="91" href="#91">91</a>  	<strong class="jxr_keyword">float</strong> risultato = Float.intBitsToFloat(value);
<a name="92" href="#92">92</a>  	<strong class="jxr_keyword">return</strong> risultato;
<a name="93" href="#93">93</a>      } <em class="jxr_comment">// end bufferToFloat()</em>
<a name="94" href="#94">94</a>  
<a name="95" href="#95">95</a>      <em class="jxr_javadoccomment">/**</em>
<a name="96" href="#96">96</a>  <em class="jxr_javadoccomment">     * Restituisce una stringa che rappresenta un numero intero in formato</em>
<a name="97" href="#97">97</a>  <em class="jxr_javadoccomment">     * esadecimale espresso su tante cifre quanto specificato, quindi con</em>
<a name="98" href="#98">98</a>  <em class="jxr_javadoccomment">     * eventuali 0 (zero) davanti.</em>
<a name="99" href="#99">99</a>  <em class="jxr_javadoccomment">     * </em>
<a name="100" href="#100">100</a> <em class="jxr_javadoccomment">     * @param value</em>
<a name="101" href="#101">101</a> <em class="jxr_javadoccomment">     *            il numero intero da rappresentare in esadecimale</em>
<a name="102" href="#102">102</a> <em class="jxr_javadoccomment">     * @param digit</em>
<a name="103" href="#103">103</a> <em class="jxr_javadoccomment">     *            le cifre con cui costruire la stringa</em>
<a name="104" href="#104">104</a> <em class="jxr_javadoccomment">     * @return la stringa formattata.</em>
<a name="105" href="#105">105</a> <em class="jxr_javadoccomment">     */</em>
<a name="106" href="#106">106</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> String hexString(<strong class="jxr_keyword">int</strong> value, <strong class="jxr_keyword">int</strong> digit) {
<a name="107" href="#107">107</a> 	String s = <span class="jxr_string">"0000"</span> + Integer.toHexString(value);
<a name="108" href="#108">108</a> 	<strong class="jxr_keyword">return</strong> s.substring(s.length() - digit);
<a name="109" href="#109">109</a>     } <em class="jxr_comment">// end hexString()</em>
<a name="110" href="#110">110</a> 
<a name="111" href="#111">111</a>     <em class="jxr_javadoccomment">/**</em>
<a name="112" href="#112">112</a> <em class="jxr_javadoccomment">     * Converte in una stringa di due cifre esadecimali il valore in input.</em>
<a name="113" href="#113">113</a> <em class="jxr_javadoccomment">     * </em>
<a name="114" href="#114">114</a> <em class="jxr_javadoccomment">     * @param value</em>
<a name="115" href="#115">115</a> <em class="jxr_javadoccomment">     *            il byte da convertire</em>
<a name="116" href="#116">116</a> <em class="jxr_javadoccomment">     * @return la stringa formattata.</em>
<a name="117" href="#117">117</a> <em class="jxr_javadoccomment">     */</em>
<a name="118" href="#118">118</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String hexString(byte value) {
<a name="119" href="#119">119</a> 	<strong class="jxr_keyword">return</strong> hexString((<strong class="jxr_keyword">int</strong>) value, 2);
<a name="120" href="#120">120</a>     } <em class="jxr_comment">// end hexString()</em>
<a name="121" href="#121">121</a> 
<a name="122" href="#122">122</a>     <em class="jxr_javadoccomment">/**</em>
<a name="123" href="#123">123</a> <em class="jxr_javadoccomment">     * Rappresenta un buffer di bytes in una stringa di numeri esadecimali; ogni</em>
<a name="124" href="#124">124</a> <em class="jxr_javadoccomment">     * 16 valori ritorna a capo per una nuova linea.</em>
<a name="125" href="#125">125</a> <em class="jxr_javadoccomment">     * </em>
<a name="126" href="#126">126</a> <em class="jxr_javadoccomment">     * @param data</em>
<a name="127" href="#127">127</a> <em class="jxr_javadoccomment">     *            il buffer da convertire in stringa</em>
<a name="128" href="#128">128</a> <em class="jxr_javadoccomment">     * @param ofst</em>
<a name="129" href="#129">129</a> <em class="jxr_javadoccomment">     *            la posizione da cui cominciare la conversione</em>
<a name="130" href="#130">130</a> <em class="jxr_javadoccomment">     * @param len</em>
<a name="131" href="#131">131</a> <em class="jxr_javadoccomment">     *            la dimensione del buffer</em>
<a name="132" href="#132">132</a> <em class="jxr_javadoccomment">     * @return la stringa formattata.</em>
<a name="133" href="#133">133</a> <em class="jxr_javadoccomment">     */</em>
<a name="134" href="#134">134</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String dumpBufferToString(byte[] data, <strong class="jxr_keyword">int</strong> ofst, <strong class="jxr_keyword">int</strong> len) {
<a name="135" href="#135">135</a> 	String s = <span class="jxr_string">""</span>;
<a name="136" href="#136">136</a> 	<strong class="jxr_keyword">int</strong> pos = 0;
<a name="137" href="#137">137</a> 
<a name="138" href="#138">138</a> 	<strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; len; i++) {
<a name="139" href="#139">139</a> 	    s += HexConv.hexString(data[ofst + i]) + <span class="jxr_string">" "</span>;
<a name="140" href="#140">140</a> 	    pos++;
<a name="141" href="#141">141</a> 	    <strong class="jxr_keyword">if</strong> (pos == 16) {
<a name="142" href="#142">142</a> 		s = s + <span class="jxr_string">"\r\n"</span>;
<a name="143" href="#143">143</a> 		pos = 0;
<a name="144" href="#144">144</a> 	    }
<a name="145" href="#145">145</a> 	}
<a name="146" href="#146">146</a> 	<strong class="jxr_keyword">return</strong> s;
<a name="147" href="#147">147</a>     } <em class="jxr_comment">// end dumpBufferToString()</em>
<a name="148" href="#148">148</a> 
<a name="149" href="#149">149</a>     <em class="jxr_javadoccomment">/**</em>
<a name="150" href="#150">150</a> <em class="jxr_javadoccomment">     * Rappresenta un buffer di bytes in una stringa di numeri esadecimali.</em>
<a name="151" href="#151">151</a> <em class="jxr_javadoccomment">     * </em>
<a name="152" href="#152">152</a> <em class="jxr_javadoccomment">     * @param data</em>
<a name="153" href="#153">153</a> <em class="jxr_javadoccomment">     *            il buffer da convertire in stringa</em>
<a name="154" href="#154">154</a> <em class="jxr_javadoccomment">     * @param ofst</em>
<a name="155" href="#155">155</a> <em class="jxr_javadoccomment">     *            la posizione da cui cominciare la conversione</em>
<a name="156" href="#156">156</a> <em class="jxr_javadoccomment">     * @param len</em>
<a name="157" href="#157">157</a> <em class="jxr_javadoccomment">     *            la dimensione del buffer</em>
<a name="158" href="#158">158</a> <em class="jxr_javadoccomment">     * @return la stringa formattata.</em>
<a name="159" href="#159">159</a> <em class="jxr_javadoccomment">     */</em>
<a name="160" href="#160">160</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String bufferToString(byte[] data, <strong class="jxr_keyword">int</strong> ofst, <strong class="jxr_keyword">int</strong> len) {
<a name="161" href="#161">161</a> 	StringBuffer sb = <strong class="jxr_keyword">new</strong> StringBuffer();
<a name="162" href="#162">162</a> 
<a name="163" href="#163">163</a> 	<strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; len; i++) {
<a name="164" href="#164">164</a> 	    sb.append(HexConv.hexString(data[ofst + i]));
<a name="165" href="#165">165</a> 	    sb.append(<span class="jxr_string">" "</span>);
<a name="166" href="#166">166</a> 	}
<a name="167" href="#167">167</a> 	<strong class="jxr_keyword">return</strong> sb.toString().trim();
<a name="168" href="#168">168</a>     } <em class="jxr_comment">// end bufferToString()</em>
<a name="169" href="#169">169</a> }
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